Limiting vignetting or lens shading, with the defect largely absent at apertures f/1.8 and above.

The lens’ weaknesses include:

• Resolution, with a score of 44 lp/mm, the lens performed so-so on an APS-C camera body. Sharpness was quite weak at the widest aperture of f/1.4. It reached its optimization at around f/2.8, but still struggled to obtain sharpness at the edges and corners of an image.

• Its cost. At $640 (USD), the price tag for the Pentax smc DA Star 55mm f/1.4 SDM runs higher than most lenses with similar specifications.

Further readings for the Pentax smc DA Star 55mm f/1.4 SDM review

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The Pentax smc DA Star 55mm f/1.4 SDM is a prime standard lens that allows users to dream up pictures with incredible artistic aesthetics thanks largely to its medium focal length and extra wide aperture of f/1.4. The latter also gives it a leg up in dark conditions. But how does the lens compare to similar Pentax lenses, or similar pieces of glass made by its rivals?